2/1*2*3+2/2*3*4+2/3*4*5+.+2/98*99*100简便运算

2+2+3+4+1 1+2+3+4×2 [-2*1/4+(-1/2)3]*(-2*2/3)+(-1*2/3)2÷5/3 比较大小(4/3)^1/3,2^2/3,(-2/3)^3,(3/4)^1/2 1 2 3 4 1 2 3 4 1 2 3 4 1,2,3,4, 1 2 3 4 1 2 3 4 1,2,3,4, 1,2,3,4, 1,2,3,4, 1,2,3,4, 1 2 3 4 1,2,3,4, 1,2,3,4, 1,2,3,4,